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FUEL SYSTEM
10
C. LOW PRESSURE CNG FILTER:
Function:
This is Coalescing Low Pressure filter, located in
between CNG Gas rail & Pressure regulator. This
unit filters oil, dust and cylinder corrosion from the
Low pressure CNG to protect the CNG injectors. It
can work within the temperature range of - 40°C to
150°C with filtration capacity of 10 microns. The
maximum rated operating pressure that L.P.filter can
withstand is 10.3 bar.
Mounting Location:
The L.P. filter is mounted below rear floor, near
timing cover of Engine.
CONSTRUCTIONAL DETAILS:
REMOVAL & REFITMENT OF L.P FILTER (On
vehicle):
NOTE:
Park the vehicle with brakes ON and duel
selector switch is kept in CNG mode.
Manually turn of the tank valve and connect
the TML tester tool and start the service
“Empty CNG lines”
Crank the engine and run in idle condition
until engine stop at its own.
Re crank the engine it should not start (tank
pressure should be 0 bar)
WARNING :
Do not turn OFF Cylinder Valves , in vehicle
running in CNG mode. This may wrongly detect
the leakage error..
Disconnect battery negative cable.